Fix utils.py

When utils.py was created, moved functions declaration was not kept for
scope_lookup by mistake, in previous commit it was named
'scope_lookup_id'.

ips_in_scope is a function that maps a list of scopes to the list of ips
contained in it, recursively. (if the scope is a room it will gather all
computers ips in that room). Add 'None' check for its scope param,
avoiding duplication of this check in several other objects using this
function.

Also import utils in 'modes' object, which was not added previously.

Fixes: be84b0a ("Add utils.py")

cli/objects/modes.py

@@ -6,6 +6,8 @@
 # Free Software Foundation, version 3.
 #
 
+from cli.utils import *
+
 import argparse
 
 class OgModes():

cli/utils.py

@@ -6,16 +6,18 @@
 # Free Software Foundation, version 3.
 #
 
-def scope_lookup_id(scope_id, scope_type, d):
+def scope_lookup(scope_id, scope_type, d):
 	if scope_id == d.get('id') and scope_type == d.get('type'):
 		return d
 	for scope in d['scope']:
 		lookup = scope_lookup(scope_id, scope_type, scope)
-	if lookup is not None:
-		return lookup
+		if lookup is not None:
+			return lookup
 	return None
 
 def ips_in_scope(scope):
+	if scope is None:
+		return []
 	if 'ip' in scope:
 		return [scope['ip']]
 	ips = []